imaginary path taken by a celestial body in its periodical revolution around another

14.

a man-made object rocketed into orbit around the earth

15.

anything designed to be shot forward as a cannon shell, bullet, or rocket

Down

1.

all objects tend to attract each other the magnitude of this attraction depends on the mass and the distance between the objects

2.

measure of the amount of mass in an object

3.

the mass of an object does not affects the time the object takes to to fall to the ground

4.

the constant motion of an object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity

5.

a force tending to move away from the center

8.

causes all objects to accelerate downward at a rate of 9.8 m/s2

9.

this force keep objects in orbit, objects tend to move toward the center

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